| 摘要 |
Pressurised water at a temperature of at least 60 DEG C, or pressurised steam, is sprayed onto the surface of the rounds. The device used for this comprises two cradles (1, 2) whose purpose is to cause the round (3) to rotate upon itself, and a set of two mobile nozzles (10) and three stationary nozzles (14) placed beneath the perimeter of the round. <IMAGE>
|
